End of my rope with FNB

I am passed frustrated, this is the 2nd time in as many months that I am complaining about this. I once again had a deduction from my bank account of R970 for an overdue credit card account which I am currently paying the attorneys for. I contacted the attorneys who contacted the bank who now refuses to refund me. How is it possible that such a huge corporation would just do whatever they like with a persons banking account. Or does the little person not get noticed. What else am I to do but to change my financial institution!!!!!